Regulator for internal-combustion engines.



M. J. WOHL & H. HERTZBERG. REGULATOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAR. 4, 1908.

Patented Dec. 21, 1909.

Ill

TiniTnn STATES PATENT Trio.

MAURICE J. WOI-IL AND HARRY HERTZBERG, OF NEW YORK, N. Y.. ASSIGNOIRS TOABBOT A. LOW, 01* HORSESHOE, NEW YORK.

REGULATOR FOR INTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be it known thatwe, MAURICE J VVoHL and HARRY HERTZBE G, citizens of theUnited States, and residents, respectively, of the city of New York,borough of Manhattan, county and State of New York, and of the city ofNew York, borough of Brooklyn, county of Kings, and State of New York,have invented certain new and useful Improvements in Regulators forInternal-Gombustion Engines, of which :the following is a specification;

The object of this invention is to provide, I

l motor 10 in one d1rect1on;-whereas, when means for maint'aining'thespeed of a gasengine constant, through the expansion and contraction ofane ctrical conductor, the

current through winch is varied by varia-- tions in the speed of theengine.

A further objectis, in connection with;

such an arrangement, to provide means for;

varying the speed of the engine from *onej constant speed to another,

Broadly, the invention consists in the combination, with a gasengine,.of aJcircuit in-- eluding a conductor adapted to expand byreason of the heat generated by a current passing therethrough,connection betweensaid conductor and the'inlet' valveof-"the' engine,whereby theexpansion and contrao tion of said conductorvaries'the'degree of opening of the valve, and means whereby the speedof the engine varies the current in said circuit.

In the accompanying drawings is fur-i -ni'shed an illustration of oneway in which the invention may be carried into effect;

In these drawings, Figure 1 is a semi;

diagrammatic view of'the whole arrangement, and Fig. 2 is a-detail insection.

Referring to these drawings, the numeral.

1 indicates an engine of the internal oom-.

bustion type, and 2 its inlet valve. This valve is opened and closed ina customary manner, through the rocker'arm 3, actuated bythe'cam-operated rod 4.

5 is the pivot. 'for the rocker arm 3; and is itself pivoted onthefeccentric stub. journals 6, which are conveniently received injournal lugs 7 A worm gear segment 8 may be fixed rto one of these stubjournalsi-and the gear may be actuated by a worm 9, driven by amotor-10. I

11 indicates a dynamo, which mayg-ibe belted or otherwiseconnecteddirectly the engine. This dynamo drives the:-mot0r--=19';*-'

specification of Letters Patent. t t Deg 21 19 9;

Application filed March 4, 1908.

Serial No. 419,107.

12 being the conductors leading thereto. Means is provided for reversingthe motor; this means being preferably in the nature of a reversingswitch 13, for reversing the direction of the current in the armature ofthe motor. The switch is pivoted at 1 1, and may be partially ofinsulating-material, as at 19', where are mounted the contact members15. A spring 16 may be provided, for slightly more than overcoming theforce of gravity, As will be readily seen, when the contact members 15rest on the contacts 17, the current passes through thearmature of thecontact members 15 rest on thelcontacts 18, the direction of current inthis armature is reversed. The, consequence, of course, .is that thegear 8 is turned in one direction or the other; and this, in turn,raises or lowers 'the pivot 5, so that the degree of opening ,offthevalve 2 is varied. Normally the contact members 15 rest neither on thecontact 17 nor 18: when this is the case, the pivot 5 is not 'afiected.

The switch 13 is operated by a conductor 20, "included in a shunt fromthe-main dy- -namo circuit.- This conductor orwire has sufiicientresistance to be heated by the current' passing through it; and may bein two sections, 21 and 22, which are secured to the switch 13atopposite sides'of its pivot, so that contraction of the wires turns theswitch against thetension of the-spring16. When the'wires expand,- theswitch is turned in the opposite direction by saidspring.

It is important to provide means whereby the expansion andcaantractionofthe'cons ductor 20 caused by the temperature ofthe air shall notaffect the switch. This may be effected by securing the remote ends ofconductor sections 21 and 22 to spring sup-V ports :43, and connectingthese supports by a compensating wire 24, which is equally ,afiected asto expansion and contraction by. the temperature of the air as is theconductor 20. It be seen, that a fall in temperature of the surroundingair, causing equal contraction-iii conductor 20. and'wiie 24, results inthe xvii-e24 drawing the supports 23 slightly towardeachother. As'tamount of inward'movementjnf these su ports is exactly theaamount ofcontraction of thefcondnctor 20,- as'well asof the wire 24, itialliowsthat. the T'conduetor Sections-21 and ififi' xert no pull on thesWi'tch,Conversely,

creased or diminished according .tlOIl of rotation of the motor, areversing 2. In combination expansion both of conductorQO and wire 24,permits the spring supports 23 to separate slightly, taking up the slackin the conductor sections 21 and 22, without permitting the spring 16 toturn the switch.

It will be understood, of course, that the arrangement is such that theexpansion of conductor 20, due to a greater output of current from thedynamo, due in turn to increased speed in the engine, results,:t'hroughthe instrumentalities described, in reducing the degree of opening of'the .inlet valve, with consequent reduction of engine speed. Reducedspeed in the engine results, conversely, in a greater opening of theinlet valve, so'that the engine speed is brought back to the desiredconstant.

In order to vary the speed of the engine at will, we have shown avariable resistance R in the shunt with the conductor 20 It will beunderstood that the construc-v tions and arrangements which we haveshown are merely illustrative, and that thecmbodiment of the underlyinginvention, as stated at the outset, may be widely varied.

What we claim as new is:

1. In combination with a gas engine, means for regulating the speedthereof, comprising a circuit including a conductor adapted to expand byreason of the heat generated by a current-passing therethrough,connection between said conductor and the inletvalve of the enginewhereby the expansion and contraction of said conductor varies thedegree of opening of the valve, means whereby the speed of the enginevaries the current in said circuit, and means for varying the current insaid circuit at will. i

with a gas engine. means for regulating the speed thereof, comprising adynamo driven by the engine, a motor adapted to be supplied with currentfromsaid dynamo, connection between. said motor and the inlet valve ofthe engine whereby the degree of opening thereof is into the direcswitchfor the motor, and a conductor in shunt from the dynamo circuit adaptedto expand by reason of the heat generated by current passingtherethrough, said conductor being connected to the reversing switch tooperate the same through its expansion and contraction.

3. In combination with'a gas engine hav ing its inlet valve operated bya rocker-arm, means for regulating the speed of the engine, comprisingan 'eccentrically journaled pivot for said rocker-arm, a motor connectedwith said pivot to turn the latter, a reversing witch tor-the motor, acircuit including a conductor adapted to expand by reasonot speed of theengine.

- means for regulating thesp said gear,

principles .of tlie prising heat generated by current passingtherethrough, said conductor being connected with the reversing. switchto operate the same, and means'whereby the current in this conductorcircuit is varied according to the 4. In combination with a gas enginehaving its inlet valve operated by a rocker-arm,

eed of the engine, comprising an eccentrlcall'y journaled pivot for saidrocker-arm, a wormv gear vconnected to said-pivot, a worm meshing: witha motdr for driving the worm, a reversing 'switch for the motor, acircuit including a conductor adapted to expand by reason of heatgenerated by a current passing therethrough, said conductor being;connected with the reversing switch to operate the same, and meanswhereby the current in this conductor circuit is varied according to thespeed of-the engine. 7

5.,In combination with a I gas engine, means for re nplat-ing the speedthereof, comprising a' iiibtor, connected with the inletvalve of theengine to vary the degree of opening thereof, a reversing switch forsaid motor, a circuit .including a conductor adapted to expand by reasonof the heat generated by current passing therethrough, connectionbetween said circuit and the engine whereby variations in speed of thelatter varies the current in the circuit, spring supports to which theends of said conductor are secured, the conductor being connectedintermediately to the reversing switch to operate the latter throughexpansion and contraction, and a compensat ng wireconnecting said springsupports, being adapted to be affected equally with the conductor byatmospheric temperature.

6. In combination with "a as engine, means for regulating the a motor,connection between sa d motor and the inlet valve of the engine wherebythe degree of opening of the latter is increased or diminished by theoperation of the motor'fa reversing switch 'for the mpj tor, a. circ tincludinga conductor adapted to cxpandyby reason, of theiheatgeneratedby current passing therethrough, sa d conductor being connected with thereversing switch to operate the same, meanswhereby the current inthisconductor circuit is varied according to the speed ftheengme, and avariable resistance in circuit with said conductor.

Signed at Brooklyn, New York city, in the-county of Kings and State ofNew York this 29th day of Feb. 1908.

. MAURICE J. WOHL.

HARRY HERTZBERG.

Witnesses: 1

LEWIS W. HASKINS, 'JoHN FLATHMANN.

speedt ere0f,com-

